diff --git a/src/views/faceteach/FaceTeachStuSign.vue b/src/views/faceteach/FaceTeachStuSign.vue
index a9b8d90..8854676 100644
--- a/src/views/faceteach/FaceTeachStuSign.vue
+++ b/src/views/faceteach/FaceTeachStuSign.vue
@@ -167,7 +167,7 @@ const { query: { courseId }} = useRoute();
 
 const { data } = useRequest(STU_OFFCOURSE_DETAIL, { courseId, usePermission: true, });
 const teacherInfo = useUserInfo(computed(() => data.value?.planDto?.teacherId));
-const isAllowSign = computed(() => dayjs().isBetween(dayjs(data.value.planDto?.beginTime).subtract(data.value.beforeStart || 0, "minute"), dayjs(data.value.afterStart ? data.value.planDto?.beginTime : data.value.planDto?.endTime).add(data.value.afterStart || 0, "minute")));
+const isAllowSign = computed(() => dayjs().isBetween(dayjs(data.value?.planDto?.beginTime).subtract(data.value?.planDto?.beforeStart || 0, "minute"), dayjs(data.value?.planDto?.afterStart ? data.value?.planDto?.beginTime : data.value?.planDto?.endTime).add(data.value?.planDto?.afterStart || 0, "minute")));
 
 const handleClick = (tab, event) => console.log("附件", tab, event);
 const activeName = ref("first");